Challenges

In this coding challenge, I use the Leibniz formula (aka infinite series) to approximate the digits of Pi and graph the convergence.

Happy Pi Day! To celebrate I attempt to compute the digits of Pi using the “collisions” method, thanks to 3Blue1Brown for the idea!

An attempt to implement the basic mechanics of Angry Birds in JavaScript using p5.js and the matter.js physics engine.

It’s groundhog day on the coding train as I demonstrate another noise loop GIF technique, this time with 4D OpenSimplex Noise in Processing (Java).

In this multi-part coding challenge I show how to use a noise field and polar coordinates to create a perfect GIF loop.

In this tutorial, I demonstrate how to render a sketch into a perfect, looping GIF with Processing (Java).

In this multi-part challenge, I use a parametric equation (from Wolfram Mathworld) to draw a heart curve in Processing (Java).

In this video, I visualize the "mathematical heart" Cardioid using times tables calculations.

In this video, I follow Mike Ash’s guide to Fluid Simulation and port Jos Stam’s "Real-Time Fluid Dynamics for Games" algorithm and code in Processing (Java).

In this coding challenge, I simulate the “Bouncing DVD Logo” meme in JavaScript with p5.js.

In this coding challenge, I implement the Discrete Fourier Transform algorithm in JavaScript and render a drawing using epicycles derived from the transform.

Snowflake Challenge #3! In this video, I draw the Koch Fractal Curve in Processing (Java).

In this holiday coding challenge, I use ml5.js and Sketch-RNN to generate snowflake drawings.

In this holiday coding challenge, I create a "Brownian Tree Snowflake" in Processing (Java). This video was recorded as part of a fundraiser for the Processing Foundation.

In this coding challenge, I implement Omar Pol’s fractal toothpick sequence.

In this coding challenge, I visualize a Fourier series for a square wave in JavaScript with p5.js.

In this coding challenge, I create a flocking simulation in JavaScript based on Craig Reynolds "boids" algorithm.

In this multi-part coding challenge, I visualize the "Chaos Game".

In this multi-part coding challenge, I take a closer look at the Quick, Draw! dataset and create a simple node API to "replay" drawings of rainbows and cats using p5.js.

In this coding challenge, I discuss turtle graphics and make a Logo Interpreter in JavaScript.

In this coding challenge, I talk about bitwise operations, and more specifically, bit shifting.

This coding challenge is an exploration of binary numbers with p5.js. Watch me build an interactive sketch that converts binary to decimal numbers!

In part 1 of this coding challenge, I create a node.js Mastodon bot that posts images (fractal trees) generated with Processing code. In part 2, I revise the node.js Mastodon bot to post images (fractal trees) in response to user mentions.

In this coding challenge, I create a Seven-Segment Display with the p5.js library.

In this Coding Challenge, I visualize a "Lissajous Curve Table" with Processing (Java).

Snake Game!? Again!? Now with the p5.js Web Editor!

Yes, sorting numbers can be fun! In this challenge I attempt to implement the "bubble sort" algorithm in Processing (Java) and visualize the process itself with animated lines.

In this coding challenge, I visualize a 4D Hypercube (aka "Tesseract") in Processing (Java).

Can I draw and rotate a 3D cube using Processing's 2D renderer with just some math?!?! Yes! Watch to learn more about rotation and projection matrices along with perspective and orthographic projection!

In this coding challenge, I load a sprite sheet and create multiple animated sprites with the p5.js library.

In this coding challenge, I visualize the Recamán’s number sequence using the p5.js library and go on to generate a series of musical tones using p5.js sound.

Celebrating the 500,000 subscribers milestone, I create a map visualization of Coding Train subscriber locations around the world!

Visualizing the Barnsley Fern fractal with Processing (Java)!

In this coding challenge, inspired by Numberphile I visualize "sandpiles" with Processing (Java).

In this coding challenge, I visualize the outputs of a neural network solving XOR using TensorFlow.js.

In this challenge, I expand the linear example into polynomial regression!

In this challenge, I use the TensorFlow.js library to create an interactive demonstration of linear regression (with stochastic gradient descent!)

In this coding challenge, I implement a pixel-based “fire” algorithm using Processing (Java).

In this coding challenge, I attempt to simulate 2D water ripples using Processing (Java).

Happy Star Wars day! May the fourth be with you! In this challenge, I code the iconic text scrolling/title crawl in Processing (Java) in 15 minutes!

In this challenge, I use my JavaScript neural network library and a genetic algorithm to train an agent to play Flappy Bird.

In this coding challenge, I use my neural network JavaScript library to create a "color predictor."

In this multi-part coding challenge, I implement a Quadtree data structure in JavaScript and visualize it with p5.js.

In yet another “Pi Day” coding challenge, I attempt to generate a pdf “Book of Pi” with the first 10 million digits of Pi mapped to color. Processing (Java) is used for this project.

In celebration of Pi Day, Let's attempt to “visualize” the first one million digits of Pi.

In this coding challenge, I use use a "monte carlo" method to approximate the value of Pi in Processing (Java).

In this multi-part coding challenge, I code the sliding puzzle game 2048 in JavaScript using canvas and p5.js.

In this coding challenge, I create a double pendulum simulation in Processing.

In this coding challenge, I use my Toy Neural Networks library to solve the XOR problem.

In this multi-part coding challenge, I attempt to create a simulation of the classic board game Snakes & Ladders (also known as Chutes and Ladders).